. ♪ it's the money you could be saving with geico. >>> reporter: in an upscale neighborhood known as "cocktail cove" near indianapolis, a young investment advisor with big ambitions was making an even bigger name for himself. but it wasn't quite the reputation marcus schrenker might have wished. pat carlini lived nearby. >> it seems like he just had run-ins with one neighbor after another. >> reporter: over what? >> it could be the fact that somebody was building a house next to him, and the stone on that house would look too much like the stone on his house. >> reporter: that might sound like typical neighborhood pettiness. but to others, marcus schrenker had reputedly turned into the neighbor from hell. a pretty bad tenant, too. he rented office space at this building near his home. tom britt runs the local newsletter. >> a couple years ago, he had an argument with his then-landlord. the next day, the guy wakes up and goes out to his dock, and his boat isn't there. and he gets a call from the fire department saying that there was a boat registered to him that had gone over the dam